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Mathematics 20 Online
OpenStudy (anonymous):

Multiply: (8a + 5b) (8a - 5b). Isnt this 64a^2-40ab , yay ( = i think i get it nnow!!

OpenStudy (anonymous):

yes u are right dear

OpenStudy (anonymous):

Yay ==)))

OpenStudy (anonymous):

yep right on!:D

OpenStudy (anonymous):

well pratu043 said im wrong.

OpenStudy (anonymous):

I'm a little doubtful, shoudn't you use the a^2 - b^2 formula?

OpenStudy (anonymous):

thats correct...!

OpenStudy (anonymous):

Simplify: (7x + 1) (7x - 1) well this one is 49x^-1

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